title: Antifungal and antipatulin activity of Gluconobacter oxydans isolated from apple surface.
abstract: Fungicides are the most common agents used in postharvest treatment of fruit and are the most effective against blue mould, primarily caused by Penicillium expansum. Alternatively, blue mould can be treated with antagonistic microorganisms naturally occurring on fruit, such as the bacterium Gluconobacter oxydans. The aim of this study was to establish the antifungal potential of the G. oxydans 1J strain isolated from apple surface against Penicillium expansum in culture and apple juice and to compare it with the efficiency of a reference strain G. oxydans ATCC 621H. The highest antifungal activity of G. oxydans 1J was observed between days 3 and 9 with no colony growth, while on day 12, P. expansum colony diameter was reduced to 42.3% of the control diameter. Although G. oxydans 1J did not fully inhibit mould growth, it showed a high level of efficiency and completely prevented patulin accumulation in apple juice.
authors.affiliation: Institute of Public Health Dr. Andrija Šampar, Zagreb, Croatia.
authors.forename: Martina
authors.initials: M
authors.lastname: Bevardi
authors.forename: Jadranka
authors.initials: J
authors.lastname: Frece
authors.forename: Dragana
authors.initials: D
authors.lastname: Mesarek
authors.forename: Jasna
authors.initials: J
authors.lastname: Bošnir
authors.forename: Jasna
authors.initials: J
authors.lastname: Mrvčić
authors.forename: Frane
authors.initials: F
authors.lastname: Delaš
authors.forename: Ksenija
authors.initials: K
authors.lastname: Markov
mesh_terms: D000935:Antifungal Agents; D005516:Food Microbiology; D020600:Gluconobacter oxydans / Q000145:classification / Q000502:physiology*; D027845:Malus / Q000382:microbiology*; D010365:Patulin / Q000037:antagonists & inhibitors* / Q000096:biosynthesis; D010407:Penicillium / Q000254:growth & development / Q000302:isolation & purification*; D010572:Pest Control, Biological / Q000379:methods*; D013045:Species Specificity
chemical_list: D000935:Antifungal Agents; D010365:Patulin